The inner and outer surfaces were mixed in model

[koluna]

Hi, All!

OS: Linux Mint 18.1 Serena
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.16093 (Git)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 690774c0effe4fd7b8d2b5e2fb2b8c8d145e21ce
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedKingdom (en_GB)

I had made Body002 and I saw a strange behavior...
The inner surface became the outer surface and vice versa.
Why is it so?
I cannot slice my model

[Willem]

On my system everything looks good.
How is your view when you recompute everything
When you give the "Fit all" command is the view still strange

My system :
OS: Ubuntu 18.04.2 LTS (ubuntu:GNOME/ubuntu)
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.19.
Build type: Release
Python version: 3.6.8
Qt version: 5.9.5
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: Dutch/Netherlands (nl_NL)

[koluna]

Did You try to slice this model (using a slicer)?
Give me your "stl" file, please.

[UR_]

Change sequence of content of "Sketch004" - Swap Inner/Outer circle

Screenshot 003.png (61.91 KiB) Viewed 722 times

air_pipe_5.FCStd

(260.08 KiB) Downloaded 18 times

[koluna]

Change sequence of content of "Sketch004" - Swap Inner/Outer circle

It does works!!!
Why does it work?
Is it a bug?

[kisolre]

Why does it work?

Your sketches have two closed contours each. When creating the sweep you specify the sketches as a whole so no info what to connect to what. And it takes the contours in order of their creation. First contour from the first sketch to first contour of the second sketch. Second contour of first sketch to second contour of second sketch. And so on... No bugs here.
But there is still nothing about that in the Wiki.

[koluna]

I have already understood it.
Thanks a lot, guys!

I tried to solve my task with "Thickness" tool in Part Design with a solid part.
But I was not able to make it... why?
Is it a very difficult object for this?

[chrisb]

If thickness works - good. But Thickness is Sickness. It often fails; so you are often better off modeling such things directly in the sweep.

[koluna]

Thanks!

[papyblaise]

Hello
I read somewhere it can be to have 2 explanations
1 ) you draw your 1st sketch the outer surface , and the inner surface , on the 2cd sketch you draw the inner and after the outer....no good
2 ) you draw your 1st sketch in XY plan (they respect the antihoraire sens) , you draw the 2cd sketch on XZ plan , what is the antihoraire sens in there ..... not easy to know